Grain-scourer.



'I'. GROSE.

GRAIN SGOUREB..

APPLIGATION FILED sBPT.1o, 1907.

904,950. Patented Nov. 24, 190s.

FICH- m THOMAS GROSE, OF PORT ADELAIDE, SOUTH AUSTRALIA, AUSTRALIA.

GRAIN-SCOURER.

Specification of Letters Patent.

Patented Nov. 24, 1908.

Application filed September 10, 1907. Serial No. 392,086.

To all whom it may concern:

Be it known that I, THOMAS Gizosn, a subject of the King of GreatBritain and Ireland, residing at Port Adelaide, State of SouthAustralia, Commonwealth of Australia, have invented a certain new anduseful Improved Grain-Scourer, of which the following is a specication.

My improved machine for scouring grain has several advantages overscourers hitherto in use, in that it is simple and economical inmanufacture, is far more durable, is driven much more slowly requiringless motive power, and is most effective in operation.

According to my invention the outer casing and the barrel are eachconstructed of a series of cast iron rings, instead of the perforatedplates and steel segments heretofore employed.

In order that my invention may be clearly understood, I will describethe same ,with reference to the accompanying drawings in which only thescourer proper is shown without any of the draft and dust inclosures orflues.

Figure l is a side elevation (with portion of the casing removed) of ascourer constructed according to my invention. Fig. 2 is an end view ofone of the casing rings and one of the barrel rings. Fig. 3 is an endview of one of the end plates of the barrel. Fig. 4 is an end view ofthe end plate at the outlet end of the outer casing. Figs. 5 and 6 aresectional views upon a larger scale showing the fitting together of thecasing rings and the barrel rings respectively.

The outer casing is formed of a series of cast iron rings A, securedbetween two end plates, each ring having at one end a V- shaped annulargroove B, and at the other end a V-shaped annular projection O, whichprojection however is interrupted by a number of shallow recesses D,extending across the end of the ring at regular spaces. I/Vhen the ringsare placed together to form the casing, the projection of one fits intothe groove of the next and the recesses serve for ventilation and theescape of dust from the interior of the casing. The inner surface of therings is corrugated as shown in Fig. 2. The rings are held between endplates E and F, each of which is made in two halves, an upper and alower, held together by bolts passing throuoh anges. The plate at thegrain inlet end tits closely around the spindle of the drum, but theplate at the outlet end has a large opening surrounding the spindle,such opening being covered with perforated wire to admit a draft butretain the grain. The two end plates are bolted together by bolts Gr,one of such plates having an annular groove and the other an annularprojection corresponding to those on the rings. By releasing thesebolts, any rings that have become worn (particularly those at the inletend) can be readily replaced by new ones at a minimum of expense. Thegrain inlet E1 and outlet F1, are formed. in these end plates and theplates are provided with projecting wings or brackets whereby they maybe bolted to a horizontal scourer frame.

The barrel or drum consists oi a series o1. cast iron rings II, securedbetween two end plates, each ring having a V-shaped annular groove J, atone end and a V-shaped annular projection K at the other, the projectionof the one ring fitting the groove of the next when the rings are placedtogether. The inside of each ring is plain but the outside is providedwith a series of tooth-like projections M. The rings are held betweentwo end plates N, which are bolted together and keyed upon a centralspindle R, passing through the end plates of the casing and supported inbearings outside of same. The one plate has an annular groove and theother an annular projection corresponding to those on the rings. Theheads and nuts of the bolts P are sunk into the end plates. Byslackening the bolts P, the rings H can be adjusted spirally one againstthe other more or less, thereby setting the projections M to form aseries of spirals or conveyers whereby the grain can be made to passthrough the scourer at a more or less rapid rate. The scourer isprovided with a suitable draft producing fan, inclosing case and fiuesafter the usual arrangement.

The operation of my invention is as follows-The drum is rotated withinthe outer casing by suitable means. The grain is fed through the inletE1 into the annular space between the outer casing and the rapidlyrevolving drum, and as itI is carried to the outlet Fl it is thrownabout between the projections of the drum and the corrugations of thecasing and thereby thoroughly cleaned and scoured, the dust escapingthrough the recesses D in the outer casing.

Having now fully described and ascertained my said invention and themanner in which it is to be performed l declare that what I claim is l.A grain scourer comprising an outer casing and an inner drum, said outercasing and inner drum each consisting of a series of rings securedbetween two end plates, the casingrings having a corrugated innersurface and being provided at one end with a V shaped annular groove andat the other end with a V shaped annular projection, such projectionbeing interrupted by a number of shallow radial recesses across the endof the ring, the end yplates of the casing having grain inlet and outletopenings respectively. the drum rings being provided at one end with a Vshaped annular groove and at the other with a V shaped annularprojection and on their outer surface with a series of toothlikeprojections, and the end plates et the drum being mounted upon a centralspindle, all substantially as described.

2. ln a grain scourer, an outer casing consisting of a series of ringssecured between end plates provided with grain inlet and outletrespectively, each of said rings having its inner surface corrugated andhaving at one end a v shaped annular groove and at the other end a Vshaped annular projection, such projection being interrupted by a numberof shallow radial recesses extending across the end of the ring so thatwhen placed together the projection of the one ring fits into the grooveof the next, and the recesses permit the escape or' dust from theinterior of the casing, substantially as described.

3. In a grain scourer, an inner drum consisting of a series of ringssecured between end plates mounted upon a spindle, each of said ringshaving on its outside a series of tooth-like projections and having atone end a V shaped annular' groove and at the other end a V shapedannular projection, the groove and projection of the rings being at thecenter thereof so that when placed together the projection orP the onering tits into the groove of the next, substantially as described.

l. In a grain scourer, an inner drum comprising a series of rings, eachof said rings having at one end an annular groove and at the other endan annular projection, and having on its outside a series ot' tooth-lile projections, the groove and projection being at the center of theends ofthe ring, said rings being secured between end plates mountedupon a spindle and being capable of spiral adjustment one against theother whereby the tooth-like projections may be set to form a series ot'spirals or conveyers of greater or less pitch, substantially as de-

